Cinematographic apparatus



NOV. 8, 1938. GOLDHAMMER 2,135,638

C INEMATOGRAPHI C APPARATUS Filed March 17, 1934 Patented Nov. 1938PATENT OFFICE 2,135,638 CINEMATOGRAPHIO srraas'ros Leo Goldhammer,Munich, Germany, assignor to Agfa Ansco Corporation, Binghamton, N. Y.,a corporation of New York Application In March 17, 1934, Serial No.716,162 Germany March 21, 1933 3 Claims. (01. sir-17) My presentinvention relates to cinematographic apparatus and has for its objects acinematographic apparatus which is selectively adapted for use withfilms wound on spools or contained in a magazine.

' seen from the detailed specification following hereafter.

When using a very light-sensitive material for taking pictures, themagazine has proved a more reliable holder for the photographic materialthan a'spool, particularly if the spool must be inserted in fulldaylight. For another reason, too, it is desirable that besides spoolsalso magazines may be utilized in cinematographic apparatus. li'houghthe spool is the cheaper means for holding and guiding film, themagazine owing to its readiness for exposure, is considerably morefavorable than the spool, particularly when guiding the film withoutformation of a loop. Exchanging a magazine requires only a fraction ofthe time required for loading a spool.

This invention relates to an apparatus in which either, spools ormagazines can be used according to the requirements of the customer.When selectively using spools and magazines in one and the sameapparatus, however, care must be had that the emulsion layer alwaysfaces the objective, since exposure through thebacking of the film isimpossible owing to the dark colored antihalation layer. In magazinesthe emulsion layer generally forms the outer layer and in spools itforms the inner side of the film. Therefore, when using spools the filmmust be guided through the apparatus in another way and wound in anotherdirection than with the use of a magazine.

verse gear is mounted between the driving mech anism of thecinematographic apparatus and the take-up spool, by which gearthe'direction of revolution of the take-up spool may be changed. Thechange of one direction of revolution preferably takes place upon theinsertion of a magazine into the apparatus. This may be achieved 'by astop hinged to the arm carrying the change direction wheels and moved bythe insertion of the magazine in the apparatus so as to couple wheelswhich were idling with the driving axle of the take-up core.

The object of the invention is hereafter more fully described withreference to lug drawing in which Fig. 1 is a lateral view of acinematographic apparatus loaded with film spools, the lidbeing removed,

Further objects will be I the accompany- Fig. 2 is a lateral view of acinematographic apparatus loaded with a magazine, the lid being likewiseremoved,

Fig. 3 is a detail .view of the reverse gear drive.

When loading the cinematographic apparatus I with film spools (Fig. 1),the film 2 passes from the supply spool 3 over the film guiding means 4to the gate 5 and then over the elastic film guiding means 6 to thetake-up spool I which with the take up shaft ll turns in direction ofthe arrow A in a manner hereafter explained. When a magazine 8 is placedin the apparatus (Fig. 2), the film 2 leaves the magazine through a slit9 and passes directly to the gate 5 and then to the slit I0 throughwhich it again enters the magazine where it is wound upon a suitablecore having usual driving connections with the take-up shaft II. Thetake-up shaft It and film core turns, and in this'case in a directionopposite to that of the spool l (seeFig. 2, arrow B).

The means for reversing the direction of rotation of the take-up shaftit comprises a gear It on. the shaft H with which there is adapted toselectively engage either one of two gears I3a and i312 rotatablymounted upon a pivoted support M The gear I3a meshes at all times with afixed gear I30 which forms part of the driving mechanism (not shown) ofthe cinematographic apparatus. This fixed driving gear always rotates inthe direction of the arrow in Figure 3. The support It is pivoted toswing upon the center line of the drive shaft 5 Ia of the fixed gearB30.

Also' rotatably mounted-upon the support M is the gear I3d meshing atall times with the fixed driving gear I3c and with the gear 6%..

Obviously when the support It is pivoted to the left, as shown in Figure3, the gear I3a will be moved into engagement with the gear I3 wherebyto drive the shaft II and the film spool i to the right (see Fig. 1), asis necessary when spools are in the apparatus. When the support It isplyoted to the right, the gear I30. disengages the gear I3, and the gearI3b engages the gear I3 whereby the drive shaft I I and the film core ofthe magazine are rotated to the left as indicated by the arrow B in Fig.2, and which is the direction of rotation normal when a magazine isused.

The pivoting of the support It is accomplished by means of an arm Ila,projecting therefrom and to which is hinged, as at I5, one end of anangular slide I2 suitably mounted to slide on the apparatus, and theopposite end In of which is turned up as a. stop in position to beengaged by the back, wall 8a of the magazine. Thus when spools are usedinthe apparatus, the slide I2 is moved to the left as in Figure 3. Thisresults in rotating the drive shaft ii and take-up spool 7 to the right,as is required. When a magazine is used in the apparatus, it is placedtherein in such a manner that the back wall la engages the stop I20 andmoves the slide I! to the right, this resulting in causing the driveshaft ii and film core of the magazine to rotate to the left, as isrequired. in its middle part 8b on the side near the objective themagazine 8 is recessed to such an extent that the pressure plate 50 maybe withdrawn without removing the magazine.

What I claim is:

1. A cinematographic camera for use selectively with spools andmagazines comprising a casing, a film gate, a film supply shaft and afilm take-up shaft, means in said casing for changing the direction ofrotation of said takeup shaft, a manually operable member for actuatingsaid changing means and a stop on said member engageable by a magazineupon insertion in the casing for moving said member in one directionwhereby said take-up shaft will rotate in a direction normal to amagazine.

2. A cinematographic camera for use selecansaeaa tively with spools andmagazines comprising a casing, a 111m gate, a film supply shaft and afilm take-up shaft, reverse gear means in said casing for changing thedirection of rotation of said take-up shaft, means comprising a slidable5 member mounted in said casing having operative connections with saidreverse gear means and a stop on said siidable member moved by theinsertion of a magazine in the camera for moving Said slide in onedirection for actuating said re- 1 verse gear means.

A cinematographic camera for use selectively with spools and magazinescomprising a casing, a film gate. a film supply shaft and a driven filmtake-up shaft, reverse gear means 1 in said casing for reversing thedrive to said film take-up shaft to change the direction of rotationthereof, movable means mounted in said casing having operativeconnection with said reverse gear means, said movable means in- 2ciuding a part moved by the insertion of a magazine into the camera foractuating said reverse gear means.

LEO 2

